diff --git a/clang/test/CXX/drs/dr18xx.cpp b/clang/test/CXX/drs/dr18xx.cpp
--- a/clang/test/CXX/drs/dr18xx.cpp
+++ b/clang/test/CXX/drs/dr18xx.cpp
@@ -168,3 +168,31 @@
   b = static_cast<B&&>(b); // expected-error {{copy assignment operator is implicitly deleted}}
 #endif
 }
+
+namespace dr1894 { // dr1894: 3.8
+                   // NB: reusing part of dr407 test
+namespace A {
+  struct S {};
+}
+namespace B {
+  typedef int S;
+}
+namespace E {
+  typedef A::S S;
+  using A::S;
+  struct S s;
+}
+namespace F {
+  typedef A::S S;
+}
+namespace G {
+  using namespace A;
+  using namespace F;
+  struct S s;
+}
+namespace H {
+  using namespace F;
+  using namespace A;
+  struct S s;
+}
+}
diff --git a/clang/test/CXX/drs/dr21xx.cpp b/clang/test/CXX/drs/dr21xx.cpp
--- a/clang/test/CXX/drs/dr21xx.cpp
+++ b/clang/test/CXX/drs/dr21xx.cpp
@@ -1,7 +1,9 @@
 // RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
-// RUN: %clang_cc1 -std=c++1z -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2b -triple x86_64-unknown-unknown %s -verify -fexceptions -Wno-deprecated-builtins -fcxx-exceptions -pedantic-errors
 
 #if __cplusplus < 201103L
 // expected-error@+1 {{variadic macro}}
@@ -188,3 +190,31 @@
   B &B::operator=(B&&) = default; // expected-error {{would delete}} expected-note@-10{{inaccessible move assignment}}
 #endif
 }
+
+namespace dr2199 { // dr2199: 3.8
+                   // NB: reusing part of dr407 test
+namespace A {
+  struct S {};
+}
+namespace B {
+  typedef int S;
+}
+namespace E {
+  typedef A::S S;
+  using A::S;
+  struct S s;
+}
+namespace F {
+  typedef A::S S;
+}
+namespace G {
+  using namespace A;
+  using namespace F;
+  struct S s;
+}
+namespace H {
+  using namespace F;
+  using namespace A;
+  struct S s;
+}
+}
diff --git a/clang/test/CXX/drs/dr4xx.cpp b/clang/test/CXX/drs/dr4xx.cpp
--- a/clang/test/CXX/drs/dr4xx.cpp
+++ b/clang/test/CXX/drs/dr4xx.cpp
@@ -124,6 +124,7 @@
 }
 
 namespace dr407 { // dr407: 3.8
+                  // NB: reused by dr1894 and dr2199
   struct S;
   typedef struct S S;
   void f() {
diff --git a/clang/www/cxx_dr_status.html b/clang/www/cxx_dr_status.html
--- a/clang/www/cxx_dr_status.html
+++ b/clang/www/cxx_dr_status.html
@@ -11171,7 +11171,7 @@
     <td><a href="https://cplusplus.github.io/CWG/issues/1894.html">1894</a></td>
     <td>CD6</td>
     <td><I>typedef-name</I>s and <I>using-declaration</I>s</td>
-    <td class="none" align="center">Unknown</td>
+    <td class="full" align="center">Clang 3.8</td>
   </tr>
   <tr id="1895">
     <td><a href="https://cplusplus.github.io/CWG/issues/1895.html">1895</a></td>
@@ -13001,7 +13001,7 @@
     <td><a href="https://cplusplus.github.io/CWG/issues/2199.html">2199</a></td>
     <td>CD6</td>
     <td>Typedefs and tags</td>
-    <td class="none" align="center">Unknown</td>
+    <td class="full" align="center">Clang 3.8</td>
   </tr>
   <tr id="2200">
     <td><a href="https://cplusplus.github.io/CWG/issues/2200.html">2200</a></td>